Apparatus for severing sheets



Aug. 25, 1936. F. 0. SMITH :APPARATUS FOR VSEVERING SHEETS Filed July '7, 1933 2 Sheets-Sheet 1 v INVENTOR fiPspsklc/rd 544/71 J ATTORNEY'S.

Aug. 25, 1936. I ojs v rr' I 2,052,519

I APPARATUS FOR SEVERING SHEETS Filed July 7, 1933 a Sheets-Sheet 2 INVENTOR Fesose/cx 0. .SM/Tl/ ATTORNEY5.

Patented Aug. 25, 1936 mum- :rossltcs APPARATUS FOR SEVERING SHEETS Trederi'ck 0."Smith;'Brooklyn, N. Y., assignor of -one=half to A. Stirling Smith,--New-York, N.-Y.

3 @Application July 7, 1933, Serial No. 679,289

5 Claims.

.-,,This;.-inventioni:is; concernedawith ,thegproducvision: of singlezitems. ofiprinted matter :which. are -ifirst:printed :in multipleglayouts: that:is,:witha mplurality ,Ofn complete.- forms; printed-one asingle 5 sheet, and particularly those whichshavewcon- -.-;trasting colorondesign effectsiatgtheedges which pare originally, joined. ."In practice heretofore, t; hen; it, has been'gdesired to secure the advancztages of multiple ,layout printing, and to produce I a booklet or the likeswith a.-design:.having oppo- 'i-LQOgHiS other alternative: was, to retrim the product in separate; operation, with consequent added exep nse and. consumption of time. By the present JliIlVBIltiOll, "both-edges can be trimmed; perfectly and automatically in the folding machine,

.fllhesilsolutiomoffered:by the present invention involves making the color portion and the adjoining plain portion in the multiple layout each a little wider than desired in the finished product, and cutting out a strip which includes the juncture and extends a little to each side of it, as shown in Figs. 4 and 5.

This may be absolutely necessary in order to out perfectly clean edges in the one operation, as where in the finished product the north and south edges are contrasting and the east and west edges are also contrasting. Or it may be desirable where only two opposite edges are different from each other, but the exigencies of layout require that those two edges be joined in the multiple form.

It will often be more satisfactory to cut out a waste strip with two spaced cutters than to make a single out even where the ends of the form do not contrast, because this allows more scope for adjusting measurements; and, also, if the form of cutter used leaves a clean cut at one side but a rumpled edge at the other, the waste strip can be the side to take the rumpled edge and no harm will be done.

The usual folding machine has one or more pairs of opposed circular knives included in it, for cutting up multiple forms as they pass through in the folding operation. The above described method of cutting apart the forms introduces the problem of how to handle the waste strip. I have-accordingly devised speciflcstructure. to,handle it. This structure can be applied as, an accessoryto theconventional folding machine, its knives being reset oradditional ones added as may be necessary.

.-R.eferring more; particularly to the drawings: :Fig. lis-a vertical sectional view showing how the multiple :forms pass through the cutters and the single forms pass onto a receiving belt, while the waste strips are.deflected-into a waste chute; 10 Fig.2 1558,11 elevational view on the broken line ,2-+2 ofyFig. 1, showing thecuttersand the guide for the cut-out strip;

Fig. 3 .is a perspective View showing the guide yto-receive and discharge the narrow waste strip; 15 Fig. 4 is a perspective View showing a pair of printed forms made up together by multiple layout printing and .Fig; 5.is a-perspectivev view showing the pair of printed forms after being cut apart to theirflnal single form, the cut-out strip also being seen here. In. the drawings, the multiple. printed form A izcomes; through, folding rolls I, 2,.-3,-and :passes -,.between spaced circularknivess 4 a and; 5 mounted on shaft 6, and cooperating knives] and 8 mount-,; ;25 ed on shaft 9. These knives cut the form into two finished products B and C and a waste strip D, which waste strip D will include the juncture between parts CI and B2 of contrasting color or design, when the form is so gotten up, thus leaving clean edges as explained above.

The finished forms B, C pass on to a belt conveyor Ill for further folding or for stacking.

The waste strips D are engaged by the projecting tongue II' of a deflector II which curves around the lower cutter shaft 9 and whose tongue extends into the path of travel of the paper fed through. This deflector is narrowed at its tip I I to the smallest desired width of the waste strip, and widens at a point just below the path of the paper, serving to catch the Waste strips and guide them around and deposit them in a waste receptacle or trough 2|. Where the deflector widens the shoulders I2, I3 are curled back so that the waste strips will not catch on them. The deflector at its lower end is bent back on itself to terminate in a socket I4 secured to a part of the frame of the machine as by a set screw I5. It can thus be fastened to the frame of the ordinary folding machine.

Between the deflector II and the lower cutter shaft 9, there is disposed a stripper I8 which, at the point where the cutting takes place, is within the periphery of the lower cutters I and 8. This stripper extends both forwardly and rearwardly, 55

I tween the deflector and stripper.

!6 of the bracket-strap help guide the waste strips in that they prevent their falling or sliding out to the side. a V I In a preferred embodiment, the stripperarrangement is made adjustable as to width. As shown in Fig. 3, tongue llhas parallel rods 48, 1

l9 afiixed to its ends, and a second tongueZfll has ends bent part way around these rods. Thus, this tongue 20 can be pushed directly over tongue l1 if the cut-out strip is to be narrow, as shown in full lines in Fig. 3, or can be slid to the side along rods 18, I9 if the strip is to be wider, as shown in dotted lines in Fig. 3. a

It is to be understood that I have described and illustrated a particular form of my invention, but the inventive concept can obviously be'made use of in various embodiments, so I wish to be limited only by the scope of the claims. Where I have referred to printed matter, I means to use that expression generically, to include the products of lithography, embossing, and every other process by which paper, cloth, leather, fabric, metal foil, or the like may have dissimilarities in appearance imparted to parts of its surface.

It is to be understood also that apparatus of my invention may be installed-on a press, so that as the printed product comes out of the press, it a I claim:

The short sides 1. A sheet cutter comprising two laterally spaced pairs of opposed cutting knives, mounted on shafts, through which the sheets are fed, a deflector at the rear side of the knives starting above the path of the sheets and extending therebelow and being positioned opposite the space between the knives, a stripper between the deflector and the lower knife shaft and'extending both forward and backward from. the point of severance, a bracket-strap'fastening said stripper and deflector together, said bracket-strap extending sideways from the stripper and from the deflector before bridging across. 2. The device of claim 1 in which parallel rods extend laterally from the ends of the stripper, and a second stripper member isslidably mounted on said rods. y

3. The device of claim 1 in which parallel rods extend laterally from the ends of the stripper, whereon is slidably mounted a second stripper member of substantially the same size and. shape ing machine, adapted to separate out and guide away an intra-marginal strip cut out of a sheet by spaced cutters, consisting'of adeflector having its lower end shaped to forni a fastenerfofattachment to the machine, and its upper end extending as a narrow tonguefor engaging-and guiding the cut-out strip. a stripper spaced from said deflector, and a bracket-strap extending around the outside of both deflector and stripper and attached to both to secure them together.

5. The device of claim 4 inwhich parallel rods 5 extend laterally from the ends of the stripper, whereon is slidably mounted :a second'stripper member of substantially the same size andshape as the first, whose ends arecurled part way around said rods, so that it may be positioned directly over the first stripper or spacedout to the side thereoL- FREDERICK ,0. SMITH. 

